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ASTM C502-04

(Test Method)

Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile

Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile

SIGNIFICANCE AND USE
Tile are normally pressed in dies having true 90° angle construction. However, minor variations in die fill, compacting pressure, and heat treatment can result in finished tile with acute and obtuse angles. This out-of-squareness results in a difference in length of opposite sides, and the tile may have the appearance of a keystone or wedge.
Excessive wedging presents difficulties in the installation of tile. This test method provides a means for determining the degree of wedging.
SCOPE
1.1 This test method covers the determination of the wedging or deviation from rectangularity of flat, rectangular wall and floor tile. The test method covers tile as defined in Terminology C 242.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Mar-2004
ICS
91.100.25 - Terracotta building products
Technical Committee
C21 - Ceramic Whitewares and Related Products
Drafting Committee
C21.06 - Ceramic Tile
Current Stage
Ref Project

Relations

Replaces
ASTM C502-93a(1999) - Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile
Effective Date
01-Apr-2004
Replaced By
ASTM C502-09 - Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile
Effective Date
01-Jan-2009

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ASTM C502-04 - Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor TileASTM C502-04 - Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile
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ASTM C502-04 - Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C502–04
Standard Test Method for
1
Wedging of Flat, Rectangular Ceramic Wall and Floor Tile
This standard is issued under the fixed designation C 502; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope acute and obtuse angles. This out-of-squareness results in a
difference in length of opposite sides, and the tile may have the
1.1 This test method covers the determination of the wedg-
appearance of a keystone or wedge.
ing or deviation from rectangularity of flat, rectangular wall
4.2 Excessive wedging presents difficulties in the installa-
and floor tile. The test method covers tile as defined in
tion of tile. This test method provides a means for determining
Terminology C 242.
the degree of wedging.
1.2 The values stated in inch-pound units are to be regarded
as the standard. The values in parentheses are for information
5. Apparatus
only.
5.1 An apparatus as shown in Fig. 1 or other suitable
1.3 This standard does not purport to address all of the
apparatus. The dial gage (B) is used for measuring rectangu-
safety concerns, if any, associated with its use. It is the
larity.
responsibility of the user of this standard to establish appro-
5.2 A calibrating plate made of steel or aluminum of
priate safety and health practices and determine the applica-
accurate dimensions and with straight, flat sides.
bility of regulatory limitations prior to use.
6. Test Specimens
2. Referenced Documents
2 6.1 At least five tile specimens shall be selected at random
2.1 ASTM Standards:
from the lot to be tested. The specimens shall be brushed to
C 242 Terminology of Ceramic Whitewares and Related
remove all adhering particles of clay and sand.
Products
C 499 Test Method for Facial Dimensions and Thickness of
7. Procedure
Flat, Rectangular Ceramic Wall and Floor Tile
7.1 Select an apparatus of the appropriate dimensions so
that, when a tile is placed in the apparatus, the locating studs
3. Terminology
are 5 mm from each corner of the side adjacent to the side
3.1 Definitions:
being measured. The plunger of the gage (B) shall also be 5
3.1.1 wedging of tile—the difference between two spaced
mm from the corner of the tile on the side being measured.
measurements of the length or width of a tile, expressed as a
7.2 Fit the appropriate calibrating plate exactly into position
percentage of the distance between points of measurements.
on the instrument and adjust the gauge reading to a suitable
3.2 For the definition of major and minor facial dimensions
known value.
see Test Method C 499.
7.3 Removethecalibratingplate,placethepropersurfaceof
4. Significance and Use the tile on the locating studs in the apparatus, and record the
gage reading 5 mm from the corner. Rotate the tile, if square,
4.1 Tile are normally pressed in dies having true 90° angle
to obtain four measurements. Repeat this procedure for each
construction. However, minor variations in die fill, compacting
tile. In the case of oblong tiles, use separate instruments of the
pressure, and heat treatment can result in finished tile with
appropriate dimensions to me
...

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